Unit 1
Anything that has mass and takes up space
Matter
property
Protons have a __________ charge.
Neutrons have a ________________ charge.
Electrons have _____________ charge.
positive, neutral, negative
This state of matter has atoms packed tightly together and vibrate in place
solids
You use this to find volume of an irregular object
Water Displacement or a graduated cylinder
the things we use to measure properties... example: grams or mL
units
The atomic number of an element represents:
The number of protons in the nucleus
This state of matter has atoms that slide past one another and move freely
liquids
This is used to find mass
triple beam balance electronic scale
smallest amount you can have of an element
an atom
The number of electrons in an atom is
the same as the number of protons.
This state of matter has no definite shape or volume
gas
What is the density of an object that is 96g and has a volume of 3cm cubed.
32g/cm cubed
number of elements we have
118
What is science and engineering practice #9?
Interpret and express scientific language.
Describe the structure of an atom.
Center nucleus made of protons and neutrons and orbiting electrons constantly in motion.
What is science and engineering practice #6?
Constructing explanations and designing solutions.
List three examples of properties and their units.
Properties: distance, mass, volume, texture, color, shape.
Units: kilometers, kilograms, kiloliters.
What is the atomic mass of Gold?
196.96
Atoms have mass and take up space. What is the third property of all atoms?
They are constantly in motion